###REPLACE###
 while (!digitalRead(home_switch)) { // Make the Stepper move CW until the switch is deactivated
    stepperX.moveTo(initial_homing);
    stepperX.run();
    initial_homing+=home_step;
    //delay(1);
  }
###with###
stepperX.moveTo(home_step);
 while (!digitalRead(home_switch)) { // Make the Stepper move CW until the switch is deactivated
    stepperX.run();
    //delay(1);
  }